- Correspondence to
: Dr Michael Leitzmann
Department of Epidemiology and Preventive Medicine, Regensburg University, Franz-Josef-Strauss-Allee 11, Regensburg 93053, Germany;
- Published in print 1 July 2013.
- Published online 6 June 2013.
- Published first 24 November 2012.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.